Growing Pyrethrum in Wajir

Soil suitability analysis based on Wajir's nutrient profile

Wajir County is a challenging environment for Pyrethrum (soil-match score 0/100) and will need significant amendment before planting. At an average pH of 8.4 the soil sits above Pyrethrum's preferred 5–6.5 range, which can limit uptake of phosphorus and micronutrients. The main gap is nitrogen — measured at N 0.52 g/kg, P 39.3 mg/kg, K 396 mg/kg against this crop's medium/high/medium demand — so the fertilizer plan below prioritises closing that deficit. Pyrethrum prefers loam soils, while Wajir is largely sandy, so drainage and organic-matter management matter more here. Wajir receives approximately 200 mm/year — well below Pyrethrum's minimum of 900 mm — so supplemental irrigation would be essential for this crop. On ShambaIQ's soil-match model, Pyrethrum is the #87 soil match of the 106 crops we assess for Wajir County. Pyrethrum's full potential is about 500 kg/acre (~KES 140,000/acre at KES 280/kg), but at Wajir's 0/100 suitability a realistic target here is closer to 0 kg/acre (~KES 0/acre) unless the constraints above are addressed.

Better matched to Wajir's soil: Sisal, Aloe Vera, and Green Grams — each scores higher on the same soil.